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        • [1]張 軍,吳金龍,王先爲,等.混合直流輸電系統過電壓抑制方法研究[J].高壓電器,2019,55(07):187-194.[doi:10.13296/j.1001-1609.hva.2019.07.027]
           ZHANG Jun,WU Jinlong,WANG Xianwei,et al.Research of Control Strategy of Suppressing Overvoltage on Hybrid-HVDC Transmission System[J].High Voltage Apparatus,2019,55(07):187-194.[doi:10.13296/j.1001-1609.hva.2019.07.027]
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          混合直流輸電系統過電壓抑制方法研究()
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          《高壓電器》[ISSN:1001-1609/CN:61-11271/TM]

          卷:
          第55卷
          期數:
          2019年07期
          頁碼:
          187-194
          欄目:
          研究與分析
          出版日期:
          2019-07-31

          文章信息/Info

          Title:
          Research of Control Strategy of Suppressing Overvoltage on Hybrid-HVDC Transmission System
          作者:
          張 軍 吳金龍 王先爲 胡丁文 牛 翀
          (西安許繼電力電子技術有限公司, 西安 710075)
          Author(s):
          ZHANG Jun WU Jinlong WANG Xianwei HU Dingwen NIU Chong
          (Xi’an XJ Power Electronics Technology Co., Ltd., Xi’an 710075, China)
          關鍵詞:
          混合直流輸電系統 過電壓水平 電流指令快速響應 充電回路
          Keywords:
          hybrid-HVDC transmission system overvoltage current order fast response strategycharging circuit
          DOI:
          10.13296/j.1001-1609.hva.2019.07.027
          摘要:
          混合直流輸電系統中逆變站采用電壓源換流器,徹底解決了換相失敗問題,未來在多饋入直流輸電地區發展前景非常好。過電壓水平對系統的安全穩定和工程可行性非常關鍵,因此對于LCC-MMC混合直流輸電系統過電壓水平的抑制策略研究十分有必要。文中首先研究了LCC-D-MMC混合直流輸電系統的運行原理,進一步研究了過電壓發生的機理;然後分析了LCC-MMC混合直流輸電系統過電壓影響因素,在此基礎上提出了混合直流輸電系統過電壓抑制策略;最後在PSCAD/ EMTDC軟件中建立了LCC-MMC混合直流輸電過電壓仿真模型,對LCC-MMC過電壓抑制策略進行了仿真驗證。通過研究可知,MMC閉鎖後存在的充電回路爲混合直流輸電系統過電壓的主要因素,采用LCC電流指令快速響應策略可以有效的抑制系統過電壓水平。
          Abstract:
          In hybrid-HVDC transmission system, voltage source converter is used in inverter station, by this the commutation failure would be avoided, it would be used widely for multi-infeed direct current system transmission system in future. Overvoltage is very critical for power transmission stability and engineering feasibility of hybrid-HVDC transmission system. It is necessary and significant to research overvoltage control strategy on hybrid-HVDC transmission system. Firstly, the operation and overvoltage mechanism of hybrid-HVDC transmission system are analyzed in this paper. Above this, overvoltage impact factors of hybrid-HVDC transmission system are comprehensively analyzed. Based on this, the overvoltage control strategy would is proposed in detail. Finally, LCC-MMC hybrid-HVDC transmission system and model are built by PSCAD/EMTDC, and the overvoltage control strategy is simulated. According to the analysis and result, the main factor of HVDC transmission system overvoltage is the charging circuit of sub-module, after MMC blocking. In addition, the overvoltage level of hybrid-HVDC transmission system could be suppressed effectively by LCC current order fast response strategy. This work is supported by State Grid Technology Project of China .

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          備注/Memo

          備注/Memo:
          張 軍(1986—),男,碩士,研究方向爲直流輸電系統分析、過電壓與絕緣配合設計。 吳金龍(1981—),男,碩士,研究方向爲柔性直流輸電系統分析與控制技術等。 王先爲(1985—),男,博士,主要從事電力自動化研究工作。 胡丁文(1988—),男,碩士,研究方向爲柔性直流輸電系統分析與控制技術等。 牛 翀(1990—),男,碩士,研究方向爲柔性直流輸電系統分析與控制技術等。收稿日期:2018-10-19; 修回日期:2019-01-22 基金項目:國家電網科技項目。 Project Supported by the Science and Technology Program of SGCC.
          更新日期/Last Update: 2019-07-15